本文關(guān)鍵詞：基于DSP的三相電壓型PWM整流器的設(shè)計(jì)和研究　出處：《華南理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 三相電壓型PWM整流器 滑模變結(jié)構(gòu)控制 前饋解耦 SVPWM DSP

【摘要】：隨著電力電子技術(shù)的廣泛應(yīng)用與發(fā)展，供電系統(tǒng)中添加了大量的非線性負(fù)載，引起電網(wǎng)電壓、電流的畸變，導(dǎo)致電力污染，傳統(tǒng)的二極管和晶閘管整流系統(tǒng)作為各類電力電子設(shè)備與電網(wǎng)的接口，造成的諧波污染尤為嚴(yán)重。近年來PWM整流技術(shù)由于具有高功率因數(shù)、低諧波污染、能量可以實(shí)現(xiàn)雙向流動、小容量儲能環(huán)節(jié)、恒定直流電壓控制等優(yōu)點(diǎn)，可以有效的減輕諧波污染，因而得到了廣泛的研究和工程應(yīng)用。 通過閱讀大量參考文獻(xiàn)和資料，熟悉了PWM整流器在各種坐標(biāo)系下的數(shù)學(xué)模型和相關(guān)控制策略，在此基礎(chǔ)上，本文以三相電壓型PWM整流器為研究對象，對其電壓環(huán)控制器、電流環(huán)控制器以及空間矢量脈寬調(diào)制(SVPWM)控制算法進(jìn)行了理論研究。然后，，采用滑模變結(jié)構(gòu)控制方法、PI參數(shù)控制方法和SVPWM調(diào)制技術(shù)對三相電壓型PWM整流器控制系統(tǒng)進(jìn)行了設(shè)計(jì)，并進(jìn)行了仿真分析。最后，以TI公司的DSP——TMS320F2812芯片為控制核心，在借鑒國內(nèi)外研究成果的基礎(chǔ)上，實(shí)現(xiàn)了該電壓電流雙閉環(huán)控制系統(tǒng)。 本文的主要內(nèi)容包括：在原理和理論分析方面，介紹了三相電壓型PWM整流器的拓?fù)浣Y(jié)構(gòu)、數(shù)學(xué)模型及其坐標(biāo)變換，包括三相靜止坐標(biāo)系和兩相旋轉(zhuǎn)坐標(biāo)系下的數(shù)學(xué)模型，常用的控制策略以及SVPWM脈寬調(diào)制技術(shù)及其實(shí)現(xiàn)；在系統(tǒng)建模和仿真方面，建立了雙閉環(huán)的三相電壓型PWM整流器控制系統(tǒng)Matlab仿真模型，其中電壓環(huán)采用滑模變結(jié)構(gòu)控制策略，電流環(huán)采用傳統(tǒng)的PI調(diào)節(jié)器，并采取前饋解耦的控制策略，給出了系統(tǒng)仿真波形和結(jié)論；硬件設(shè)計(jì)方面，主要包括主電路電感和電容等參數(shù)的計(jì)算和選取、功率器件的選型以及其驅(qū)動保護(hù)電路的設(shè)計(jì)、過零檢測及采樣電路的設(shè)計(jì)和各種保護(hù)電路的設(shè)計(jì)；系統(tǒng)軟件實(shí)現(xiàn)方面，給出了基于TMS320F2812控制芯片的系統(tǒng)軟件實(shí)現(xiàn)的主程序流程、中斷程序流程和算法子程序流程，對各程序進(jìn)行了較為詳細(xì)的介紹；最后，在基于TMS320F2812的實(shí)驗(yàn)平臺上搭建了實(shí)驗(yàn)樣機(jī)，調(diào)試了三相電壓型PWM整流器控制系統(tǒng)，測試了不同負(fù)載下的主要輸出波形，得到了與理論分析相一致的實(shí)驗(yàn)結(jié)果，證實(shí)了系統(tǒng)設(shè)計(jì)的可靠性和可行性。
[Abstract]:With the wide application and development of power electronics technology, a large number of nonlinear loads have been added to the power supply system, resulting in the distortion of power network voltage and current, resulting in power pollution. The traditional diode and thyristor rectifier system, as the interface between power electronic equipment and power grid, has caused serious harmonic pollution. In recent years, PWM rectifier technology has high power factor and low harmonic pollution. Energy can realize two-way flow, small capacity energy storage, constant DC voltage control and other advantages, can effectively reduce harmonic pollution, so it has been widely studied and applied in engineering. Through reading a large number of references and materials, we are familiar with the mathematical models and related control strategies of PWM rectifier in various coordinate systems. On this basis, this paper takes the three-phase voltage-source PWM rectifier as the research object. The voltage loop controller, current loop controller and space vector pulse width modulation (SVPWM) control algorithm are studied theoretically. Then, sliding mode variable structure control method is adopted. Pi parameter control method and SVPWM modulation technology for three-phase voltage source PWM rectifier control system is designed and simulated. Finally. Taking TI's DSP--TMS320F2812 chip as the control core, the voltage and current double closed loop control system is realized on the basis of referring to the domestic and foreign research results. The main contents of this paper are as follows: in principle and theoretical analysis, the topology, mathematical model and coordinate transformation of three-phase voltage-source PWM rectifier are introduced. It includes mathematical model of three-phase stationary coordinate system and two-phase rotating coordinate system, common control strategy, SVPWM pulse width modulation technology and its implementation. In the aspect of system modeling and simulation, the Matlab simulation model of three-phase voltage source PWM rectifier control system is established, in which the sliding mode variable structure control strategy is used in the voltage loop. The traditional Pi regulator is used in the current loop and the feedforward decoupling control strategy is adopted. The simulation waveform and conclusion are given. The hardware design mainly includes the calculation and selection of main circuit inductance and capacitance, the selection of power device and the design of its drive and protection circuit. The design of zero crossing detection and sampling circuit and the design of various protection circuits; In the aspect of system software realization, the main program flow, interrupt program flow and algorithm subroutine flow of system software realization based on TMS320F2812 control chip are given. The procedures are introduced in detail. Finally, the experimental prototype is built on the experimental platform based on TMS320F2812, the control system of three-phase voltage-source PWM rectifier is debugged, and the main output waveforms under different loads are tested. The experimental results are consistent with the theoretical analysis, and the reliability and feasibility of the system design are verified.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM461

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 冷惠文,侯霞,王東興;一種三相電源相序與斷相自動檢測電路[J];電測與儀表;2003年05期

2 毛鴻,吳兆麟,王毅,劉樹林;三相電壓型PWM整流器無電流傳感器控制策略研究[J];電工技術(shù)學(xué)報(bào);2001年02期

3 趙振波,李和明,董淑惠;采用電流滯環(huán)調(diào)節(jié)器的電壓矢量控制PWM整流器系統(tǒng)[J];電工技術(shù)學(xué)報(bào);2004年01期

4 趙葵銀;;PWM整流器的模糊滑模變結(jié)構(gòu)控制[J];電工技術(shù)學(xué)報(bào);2006年07期

5 黃勇;謝運(yùn)祥;王紹煦;;IGBT驅(qū)動模塊2SD315A在PWM整流器中的應(yīng)用[J];電源技術(shù)應(yīng)用;2010年10期

6 沈安文,余高明,萬淑蕓;PWM整流器的過調(diào)制固定開關(guān)頻率控制方法[J];電力電子技術(shù);2001年04期

7 沈傳文;劉瑋;路強(qiáng);張晶晶;;基于前饋解耦的三相PWM整流器研制[J];電力電子技術(shù);2006年02期

8 趙葵銀;楊青;唐勇奇;;基于虛擬磁鏈的PWM整流器的直接功率控制[J];電力自動化設(shè)備;2009年02期

9 曾江,焦連偉,倪以信,陳壽孫,張寶霖;有源濾波器定頻滯環(huán)電流控制新方法[J];電網(wǎng)技術(shù);2000年06期

10 洪慶祖;謝運(yùn)祥;;高功率因數(shù)三相脈沖寬度調(diào)制整流器的研制[J];低壓電器;2011年15期

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